VD model was established by the method of repeated ischemia-Reperfusion plus Sodium Nitroprusside in Wistar rats and the protective effects of Xinghuayu were observed.The author analyzed the cognitive ability of rats with the Morris water maze,and the expression of Bcl-2 and Bax protein of the rat hippocampus with immunohistochemical staining.The results showed that compared with the pseudo-surgery rats,VD model had more increase in the expression of Bcl-2 and Bax protein of the rat hippocampus(P<0.01) and ...